this is new york city, harlem. the apollo theater in memory of nelson mandela on the marquis where people are getting ready to remember him. there will be a memorial service in washington. we're about to get some details. much more of our special coverage right after this. ♪ (train horn) vo: wherever our trains go, the economy comes to life. norfolk southern. one line, infinite possibilities. >>> people all over the world are remembering nelson mandela. don lemon is in harlem at the apollo theater. a very special place, tell us why. >> reporter: absolutely. he visited here in 1990 after he got out of prison. you can see the marquis. it says nelson mandela, 1918-2013. he changed our world. i'm standing here next to this gentleman for a reason. he is the in-house cultural director and tour guide for the apollo. you were here when nelson mandela visited in 1990. what was that like? >> i was so blessed to be a part of the hundreds of thousands of people that were here to welcome nelson mandela to harlem. it was a ver